DE202005006931U1 - Damping device for movable furniture parts - Google Patents

Abstract

attenuator for movable furniture parts, with a driver (5), with a movable furniture part can be coupled and with a damper (21), by means of which a movement of the driver (5) at least in a direction is braked, characterized in that the damper (21) is designed as an eddy current brake.

Description

The The present invention relates to a damping device for movable Furniture parts, with a driver, which is coupled with a movable furniture part and a Damper, by means of a movement of the driver in at least one direction is slowed down.

From the EP 1 120 066 a closing and / or feeding device for movable furniture parts is known, in which a biased by a spring carriage supports the closing movement of the movable furniture part, wherein the movement is braked by a fluid damper. As a result, the closing operation can be carried out with low closing noise and a long service life of the closing and catching device. In such a fluid damper usually a rotary piston is used, which is immersed in a damping fluid. A training as a folding piston is possible. A disadvantage of such fluid dampers is that they are temperature-dependent, so that a design can be made only for certain temperatures and at different temperatures, the damping is set too easy or too heavy. Even with frequent use of the fluid damper in a row, the damping fluid can heat, causing the operating characteristics change adversely. Even with rapid movement, there may be the problem that the liquid film breaks off.

Furthermore, from the DE 203 08 218 a closing and damping device for movable furniture parts known in which a retraction aid is provided for the closing operation. In order to brake the movement during the closing operation, a rotary damper is provided, which has a toothed disc and a brake disc, which are fluidbeaufschlagt. Also in this element, the braking effect is based on a fluid, which is why the above-mentioned disadvantages occur.

It Therefore, an object of the present invention is a damping device for movable furniture components to create, which is simple and largely temperature-independent one corresponding attenuation for movable furniture components provides.

These Task is with a damping device solved with the features of claim 1.

According to the invention damper designed as an eddy current brake, so that the braking effect largely independently of temperature influences is. The eddy current brake can also be made compact, so that this with a small size to appropriate furniture can be mounted. By doing so leaves there is a corresponding damping the movement of furniture parts to reach.

According to one preferred embodiment of Invention is between the damper and the driver provided a transmission. The eddy current brake usually requires a higher one Rotational speed, so about a corresponding translation of the transmission high rotational speeds at the eddy current brake at a slower movement of the driver and the furniture part be achieved. The eddy current brake can be a rotatable Have disc over a gear coupled to the gear can be driven.

According to one Another embodiment of the invention, the transmission with a Freewheel provided and the movement of the driver is only in one direction braked. In opening direction is not braked, so that the opening is facilitated. Farther Is it possible, that at small opening positions also not braked. This makes it possible, with only small opening positions of the furniture part to avoid braking, as this could be distracting. In a region with a small opening can For example, a spring element ensure that the furniture part is moved to the closed position, with a brake for small Movements is not necessary.

Of the Freewheel may have a displaceable gear that of a Position in engagement with an adjacent gear in one position out of engagement is movable with the adjacent gear. This can be the gear of the freewheel over a spring being movable into engagement with the adjacent gear, being the spring over the driver actuated is.

According to one Another embodiment of the invention is the driver with a Coupled rack, driven by means of the gear of the freewheel is. This can easily be a linear movement in one Rotational movement to be implemented.

Of the Carrier is preferably from a starting position, in which the furniture part closed, in an end position in which the furniture part partially open is movable, wherein the driver in the end position locked can be. The driver can only do so over part of the route of the furniture part let it move so that the furniture part is freely movable after the end position.

According to a preferred embodiment of the invention, the driver is over at least a spring biased to the starting position, so that the closing movement of the furniture part is guided by the spring and the damper. The spring is set for a compact design at the remote to the starting position end of a coupled with the driver adapter. The space of a housing for the length of the spring can be optimally used.

The attenuator can over along a guide rail movable driver operable being, being used as a furniture part a sliding wall unit, a push element or other movable Components, such as cabinet doors etc. can be used.

The The invention further provides an eddy current brake comprising a discoid Recording for Permanent magnets of different polarity, a rotatable disc from an electrically conductive, nonmagnetic metal and two magnetic case shells conductive Metal, wherein the recording of a plurality of permanent magnets are fixable and over the number of permanent magnets and their magnetic field the braking force the eddy current brake is adjustable. Because the use of the eddy current brake in the furniture sector requires an adjustment of the braking force, since different heavy furniture components have to be slowed down so over the number of permanent magnets a simple way is available, the braking force to adjust the eddy current brake. Furthermore, the eddy current brake simple and compact and can easily on a damping element to be assembled.

Preferably is the recording of the eddy current brake made of plastic and with openings provided to insert the permanent magnets in it. Then let the permanent magnets simply mount to the eddy current brake and disassemble. Preferably four, six or eight permanent magnets of different polarity are provided, so that a sufficient magnetic field can be generated.

The Invention will be described with reference to an embodiment with reference on the attached Drawings closer explained. Show it:

1 a perspective view of an embodiment of a damping device according to the invention;

2 two views of the damping device of 1 in a starting position;

3 a view of the damping device when opening;

4 two views of the damping device shortly before reaching the end position;

5 two views of the damping device when the end position is exceeded;

6 two views of the damping device in the end position;

7 two views of the damping device when moving back the furniture part;

8th an exploded view of the damping device, and

9 an exploded view of the eddy current brake.

A damping device 1 includes a housing 9 in which movable components are arranged. The housing 9 is on a guide rail 2 mounted on a roll 3 is guided, which is coupled to a movable furniture part, such as a cabinet wall, a drawer or the like. The role 3 is via an unillustrated coupling element with a pin 4 connected, so role 3 and cones 4 be moved together by the furniture part. The pin 4 is in a driver 5 taken in a starting position at a stop 6 is applied. The driver 5 is along a slot-shaped slotted guide 7 movable, whose end 8th is formed curved.

In the 2A and 2 B is shown the starting position, at which the driver 5 at the stop 6 is applied. An adapter 10 is with the driver 5 connected, the adapter 10 over a pen 11 in a slide tour 12 with a curved end 80 in the case 9 is guided, which is perpendicular to the slotted guide 7 is arranged. The adapter 10 is also with a rack 13 coupled with a gear 14 a freewheel combs. The gear 14 is with a provided with a stepped shoulder trunnion 15 provided on a limb 17 a spring 16 is applied. The journal 15 can through the thigh 17 the feather 16 against a smaller sprocket of the gear 18 be pressed, with the axis of the gear 14 is slidably mounted. The gear 18 meshes with its larger sprocket with a smaller sprocket of gear 19 , The larger sprocket of the gear 19 in turn drives a gear 20 on, that is an eddy current brake 21 drives. The gears 18 . 19 and 20 form a kind of gear, by means of which a movement of the rack 13 to the eddy current brake 21 is transmitted.

In 3 is the beginning of a movement of the furniture part and the damping device Darge provides. The movement moves away 3 with the pin 4 from the stop 6 , where the adapter 10 in the slide tour 12 is guided. By the movement of the adapter 10 also moves the rack 13 against the force of a spring 22 that comes with a first end 23 end to the housing 9 is fixed. At the opposite end of the spring 22 is an end section 24 with a fastening 25 coupled, with the attachment 25 at that, the end 23 opposite end of the rack 13 lies. The feather 22 is due to the movement of the adapter 10 and the rack 13 curious, which is shown only partially schematically in the individual figures. The rack 13 pushes the gear 14 doing so in a direction to the right in 3 , against the thigh 17 the feather 16 , wherein due to the sliding guide of the gear 14 this disengaged from the adjacent gear 18 is moved. This leaves the eddy current brake 21 disengaged and the movement of the furniture part can be done without damping.

In 4A and 4B a position of the damping device is shown shortly before an end position. The adapter 10 is with the pen 11 at the curved end 80 the slide tour 12 reached, so that in a further movement of the adapter 10 would be pivoted. Equally, the driver 5 shortly before the end of the slide tour 7 arrived, so that in a further movement of the driver 5 would be pivoted to the pin 4 release.

In the 5A and 5B is the moment of release of the pin 4 shown, so that the coupling of the damping device is removed with the furniture part.

The pin 4 moves from a shot 27 at the driver 5 out, taking the driver 5 through the slide tour 7 was pivoted. Also the adapter 10 was through the slide tour 12 pivoted, with the adapter 10 in the curved end 80 the slide guide is locked as an end position. In the end position pushes on the rack 13 trained lead 26 against the spring 16 so that with her thigh 17 against the shoulder of the journal 15 on the gear 14 suppressed. The gear 14 thereby moves to the adjacent gear 18 towards and gets into engagement with teeth formed there. Now this is the gear 14 the freewheel with the eddy current brake 21 over the transmission 18 . 19 coupled. The spring shown only schematically 22 is in the final position and pushes the rack 13 back to the starting position.

In the 6A and 6B a position is shown in which the furniture part freely spaced from the damping device is movable. The pin 4 is no longer at the driver 5 held. In this position is the adapter 10 latched in the end position and the damping device is waiting for a closing movement of the furniture part to be activated.

In the 7A and 7B is the beginning of the closing movement shown. The pin 4 moves into the recording 27 at the driver 5 into it, causing the driver 5 is pivoted down and in the slotted guide 7 in the starting position to the stop 6 is movable. Furthermore, also the adapter 10 through the driver 5 pivoted, then the adapter 10 in the slide tour 12 also in the starting position is movable.

The movement of the adapter 10 and the driver 5 is by the spring 22 Supported the rack 13 also moved to the starting position. Through the rack 13 becomes the gear 14 the freewheel against the adjacent gear 18 pressed, so now no spring 16 more is needed to the gear 14 to keep in touch. Because the spring 22 and the rack 13 already cause a corresponding mechanical coupling.

By the movement of the gear 14 become the other gears 18 . 19 and 20 driven, due to the translation of the gear 20 with high rotational speed is moved. This will cause a fast rotational movement on the eddy current brake 21 transferred, which can then develop their damping effect. After the closing process is the driver 5 back to the starting position, where he was at the stop 6 is applied.

In 8th an exploded view of the damping device is shown. The driver 5 includes a recording 27 for the journal 4 , where on the opposite side a pin 28 in a recording 29 of the adapter 10 is held. The driver 5 is with a tapered neck section 70 in the slide tour 7 led, which at a housing bottom 30 is trained. The caseback 30 is with slots 31 provided with the corresponding locking lugs 32 on a side wall of the housing 9 can be brought into engagement. Furthermore, in the case back 30 several openings 33 provided so that this on the guide rail 2 can be screwed. For this purpose are on the guide rail 2 several openings 35 and 36 provided in the screws 34 can be screwed. Over an end opening 36 is also the stop 6 over a screw 34 fixed.

The guide rail 2 also has a recess 37 on, which is the shape of a plate 38 owns, in which the slotted guide 7 is trained. Of the caseback 30 can thus form-fitting with the plate 38 in the recess 37 be inserted.

The rack 13 is on a ledge 40 formed in which the spring 22 is inserted. The feather 22 engages with a head 42 at a fortification 25 a, so the movement of the bar 40 the feather 22 tense or relaxed.

In 9 is the eddy current brake 21 shown in detail. The eddy current brake comprises an upper housing shell 50 and a lower housing shell 58 , which are formed of a magnetically conductive metal, such as soft iron plates, such as iron plates. In the upper housing shell 50 is a central opening 51 provided by an axis of the gear 20 is performed.

The gear 20 is doing with the axis with a disc 53 of electrically conductive, non-magnetic metal, such as aluminum, brass or copper coupled, wherein in the disc 53 a central recording 57 is provided, which differs from the circular cross-section and rotatably with the gear 20 can be coupled.

The disc 53 also has openings 56 on that with a holder 54 can be connected to the corresponding pin 55 are formed.

Below the disc 53 is a recording 60 made of plastic, which has a circular side edge, at the intervals at pins 61 are formed. These cones 61 grab in corresponding recesses 52 and 59 attached to the upper housing shell 50 and the lower housing shell 58 are formed. This is the recording 60 rotatably with the housing shells 50 and 58 coupled by the recording 60 be kept at a defined distance, which ensures the air gap in which the disc 53 rotates.

In the recording is a disk-shaped plate 69 provided, in the at regular angular intervals openings 62 are formed. The openings 62 are arranged in a ring around a central recess 63 into which the holder's warehouse 54 is insertable. In the disk-shaped plate 69 are permanent magnets 64 and 65 insertable, alternately a permanent magnet with southern polarity next to a permanent magnet 65 is used with a north polarity, with identical permanent magnets 64 and 65 only different mounting direction can be installed. Through the permanent magnets 64 and 65 a magnetic field is generated by the housing shells 50 and 58 passes, with a rapid rotation of the disc 53 due to the magnetic field and thereby in the disc 53 is braked induced eddy currents.

For easy production of the eddy current brake 21 it is also possible, the disc 53 directly to the gear 20 to mold.

In the eddy current brake 21 can the braking force by the number of permanent magnets 64 and 65 be set. For large furniture parts need more permanent magnets 64 and 65 as used for small furniture parts. This allows the user variably adjust the damping element.

In the illustrated embodiment, the damping device comprises one or more springs 22 for a self-closing up. It is of course possible, the damping element without such springs 22 to train for a self-collection. In this case, the damping element works as a pure brake without Selbsteinzugsfunktion, this Selbsteinzugsfunktion can also be generated elsewhere on the movable furniture part if necessary.

Furthermore, it is possible to dispense with the freewheel. Then the eddy current brake would 21 unfold a braking effect both when opening and when closing.

A attenuator can according to the invention also different mechanisms for the movement a driver, an adapter, or the mechanical coupling via rack and gears exhibit. Here are many mechanical solutions conceivable that also in Can be used within the scope of the present invention.

The damping device according to the invention can be installed both vertically and horizontally. Because of the eddy current brake 21 Gravity has no influence on the braking effect. In this respect, the damping device can also be easily retrofitted.

The damping device shown has a guide rail 2 on. Of course, it is also possible to attach an activator directly to a piece of furniture and to the guide rail 2 and the interposed components 3 to 8th to renounce. Then the adapter 10 used as a driver in the sense of this application, which can be coupled directly with the activator.

Claims (16)

Damping device for movable furniture parts, with a driver ( 5 ), which is coupled with a movable furniture part and with a damper ( 21 ), by means of which a movement of the co recipient ( 5 ) is braked in at least one direction, characterized in that the damper ( 21 ) is designed as an eddy current brake. Damping device according to claim 1, characterized in that between the damper ( 21 ) and the driver ( 5 ) a gearbox ( 14 . 18 . 19 ) is provided. Damping device according to claim 2, characterized in that the eddy current brake ( 21 ) a rotatable disc ( 53 ), which via a with the transmission ( 14 . 18 . 19 ) coupled gear ( 20 ) is driven. Damping device according to one of claims 1 to 3, characterized in that the transmission ( 14 . 18 . 19 ) is provided with a freewheel and the movement of the driver ( 5 ) is braked in one direction only. Damping device according to claim 4, characterized in that the freewheel a displaceable gear ( 14 ) which engages from a position in engagement with an adjacent gear ( 18 ) in a position out of engagement with the adjacent gear ( 18 ) is movable. Damping device according to claim 4 or 5, characterized in that the gear ( 14 ) of the freewheel via a spring ( 16 ) in engagement with an adjacent gear ( 18 ) is movable and the spring ( 16 ) about the driver ( 6 ) is operable. Damping device according to one of the preceding claims, characterized in that the driver ( 5 ) with a rack ( 13 ) is coupled by means of the gear ( 14 ) of the freewheel is driven. Damping device according to one of the preceding claims, characterized in that the driver ( 5 ) from an initial position in which the furniture part is closed, in an end position in which the furniture part is partially open, is movable. Damping device according to claim 8, characterized in that the driver ( 5 ) is linearly movable and can be locked in the end position. Damping device according to one of the preceding claims, characterized in that the driver ( 5 ) via at least one spring ( 23 ) is biased to the starting position. Damping device according to claim 10, characterized in that the spring ( 23 ) at the end remote from the starting position with the driver ( 5 ) coupled adapter is set. Damping device according to one of the preceding claims, characterized in that the furniture part between the starting position and the end position with the driver ( 5 ) and is movable beyond the end position. Damping device according to one of the preceding claims, characterized in that the driver ( 5 ) along a recess in a guide rail ( 2 ) Is guided and the furniture part is designed as a sliding cabinet wall, as a thrust element or the like. Eddy current brake ( 21 ), in particular for a damping element according to one of the preceding claims, comprising: - a disc-shaped receptacle ( 60 ) for permanent magnets ( 64 . 65 ) of different polarity, - a rotatable disc ( 53 ) of a conductive metal, and - two housing shells ( 50 . 58 ) of a conductive metal, characterized in that on the receptacle ( 60 ) a plurality of permanent magnets ( 64 . 65 ) are fixable and on the number of permanent magnets ( 64 . 65 ) and whose magnetic field, the braking force of the eddy current brake is adjustable. Eddy current brake according to claim 14, characterized in that the receptacle ( 16 ) made of plastic with openings ( 62 ) for inserting the permanent magnets ( 64 . 65 ) is trained. Eddy current brake according to claim 14 or 15, characterized in that on the receptacle ( 60 ) four, six or eight permanent magnets ( 64 . 65 ) are mountable.